53 lines
985 B
Rust
53 lines
985 B
Rust
#![allow(clippy::manual_non_exhaustive)]
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use ref_cast::RefCast;
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use std::marker::PhantomData;
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type Marker = PhantomData<str>;
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#[derive(RefCast)]
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#[repr(transparent)]
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pub struct ImplicitUnit {
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pub value: usize,
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_private: (),
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}
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#[derive(RefCast)]
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#[repr(transparent)]
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pub struct ImplicitPhantomData<T> {
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pub value: T,
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pub marker: PhantomData<T>,
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}
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#[derive(RefCast)]
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#[repr(transparent)]
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pub struct ExplicitTrivial {
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pub value: usize,
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#[trivial]
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pub marker: Marker,
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}
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#[derive(RefCast)]
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#[repr(C)]
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pub struct Override<U, V> {
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#[trivial]
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pub first: PhantomData<U>,
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pub second: PhantomData<V>,
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}
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#[derive(RefCast)]
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#[repr(transparent)]
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pub struct Unsized<'a> {
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pub marker: PhantomData<&'a str>,
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pub value: str,
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}
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#[test]
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fn test_trivial() {
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ImplicitUnit::ref_cast(&0);
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ImplicitPhantomData::ref_cast(&0);
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ExplicitTrivial::ref_cast(&0);
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Override::<u8, i8>::ref_cast(&PhantomData::<i8>);
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Unsized::ref_cast("...");
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}
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